翻译成英文：是你的，就是你的。越是紧握，越容易失去。我们努力了，珍惜了，问心无愧。其他的，交给命运

楼上翻得很sophisticated，赞一个，不过几个小小的语法错误，修正一下即可~
Here is my version:
It will be yours if it's meant to be yours. The tighter you hold on to it, the more it tends to slip away. We tried, cherished, and we will not regret. Leave the rest of it to the destiny.

Is yours,it is you. The more, the more likely to hold on to the lost. We are trying, cherish, have a clear conscience. The other, to fate.
自己翻译的，凭我的水平，应该是对的。

The things which should be yours, that are yours. You hold it more tightly, it will escape more easily. We have tried to do it, and cherished it, so we have no regret in ourselves. As to others, leave them to fate.

如果你想地道点——
You own what belongs to you.
The harder you try, the easier you lose.
We try; we cherish; we have no shame.
In terms of others, God will know.

是你的，就是你的。
If it's yours, it's yours.
越是紧握，越容易失去。
The tighter your grip is, the easier it is to lose hold.
我们努力了，珍惜了，问心无愧。
We have tried, we have cherished, therefore our conscience are clear.
其他的，交给命运。
The rest? Leave them to fate.